摘要
延安地区黄土的成因、分布特征及物理力学性质与其他地区的黄土有很大不同，其高陡边坡的稳定性问题也有一定的特殊性。在对延安宝塔山景区地质灾害治理工程中的日本工农学校旧址黄土高陡边坡典型案例详细勘察的基础上进行分析，对滑坡发育特征及成灾因素进行深入研究，利用有限元软件FLAC3D建立了黄土高陡边坡数值模型，进行了稳定性和破坏机理的数值模拟试验，深入研究了黄土高陡边坡的稳定性和破坏机理。研究结果表明：黄土湿陷性、坡度、水、工程荷载条件、气候变化以及人为因素是影响黄土高陡边坡稳定性的主要因素；黄土高陡临空坡体的破坏形式主要为塑性剪切破坏。最后提出了使用格构锚杆锚固技术进行综合治理的技术方案。
The origin,distribution and physical and mechanical properties of loess in the area of Yan＇an are quite different from those in other regions, and the stability of its high - steep slopes also has a certain particularity. The stability of high - steep loess slope is studied based on the Baotashan Geological Hazard Management Project in Yan＇an. According to the engineering geological conditions, theoretical analysis and FLAC3D numerical model are used to analyse the failure mechanism of the high - steep slope. The results show that the main factors that affect the stability of the high - steep slope are loess collapsibility, slope, water, engineering load, climate change and human factors, and damage in the form of high - steep loess slope is mainly plastic shear failure. The technical scheme of the lattice anchor is finallyproposed to the project in the paper.
作者
刘洋
刘润
LIU Yang LIU Run(School of Architecture and Surveying Engineering, Shaanxi College of Communication and Technology, Xi＇an 710018, China Shaanxi Expressway Testing ＆ Measuring Co. , LTD, Xi＇an 710086, China)
出处
《陕西交通职业技术学院学报》
2017年第3期5-9,共5页
Journal of Shaanxi College of Communication Technology
